problem in detecting tension

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fiksiu
Posts: 4
Joined: Thu May 04, 2017 9:06 pm

problem in detecting tension

Post by fiksiu »

Hello

I immediately point out that I am a layman.
Some basics are more in the field of electrical than electronics.
That's why I can not handle myself alone.

I have assembled DSO138 .... works.
However, I see a problem in detecting tension.
The 1 kHz test signal indicates the following values:
1V x5-2,41V
1V x2-1,69
1V x1-1,61

0.1V x5-1,61
0.1V x2-1,61
0.1V x1-1,61

Acu 1.38V check with multimeter
5x 1V =3.22
5x 0.1V=1.55

2x 1V =2.01
2x 0.1V=1.44

Every manual's voltage points are OK.
aslok
Posts: 2
Joined: Wed Jun 03, 2015 7:22 pm

Re: problem in detecting tension

Post by aslok »

I have this problem too, afrer upgrade to the last firmware. I think it is soft bug
fiksiu
Posts: 4
Joined: Thu May 04, 2017 9:06 pm

Re: problem in detecting tension

Post by fiksiu »

My soft
FW:113-13801-061
LIB:13803-35
TFT Controller: 9341
fiksiu
Posts: 4
Joined: Thu May 04, 2017 9:06 pm

Re: problem in detecting tension

Post by fiksiu »

Halo
jye1 any help??
aslok
Posts: 2
Joined: Wed Jun 03, 2015 7:22 pm

Re: problem in detecting tension

Post by aslok »

0.1V x 2 = 0.2V
Test signal - Vmax: 0.45V, Vmin: -0.41V

Vpp: 0.87V instead of 3.3V
Attachments
Vpp: 0.87V instead of 3.3V
Vpp: 0.87V instead of 3.3V
fiksiu
Posts: 4
Joined: Thu May 04, 2017 9:06 pm

Re: problem in detecting tension

Post by fiksiu »

So

I see that Tech help is helpless.
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